1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.util;
24  
25  import java.util.Map;
26  import java.util.concurrent.ConcurrentHashMap;
27  
28  /**
29   * <a href="WebAppPool.java.html"><b><i>View Source</i></b></a>
30   *
31   * @author Brian Wing Shun Chan
32   */
33  public class WebAppPool {
34  
35      public static Object get(String webAppId, String key) {
36          return _instance._get(webAppId, key);
37      }
38  
39      public static void put(String webAppId, String key, Object obj) {
40          _instance._put(webAppId, key, obj);
41      }
42  
43      public static Object remove(String webAppId, String key) {
44          return _instance._remove(webAppId, key);
45      }
46  
47      private WebAppPool() {
48          _webAppPool = new ConcurrentHashMap<String, Map<String, Object>>();
49      }
50  
51      private Object _get(String webAppId, String key) {
52          Map<String, Object> map = _webAppPool.get(webAppId);
53  
54          if (map == null) {
55              return null;
56          }
57          else {
58              return map.get(key);
59          }
60      }
61  
62      private void _put(String webAppId, String key, Object obj) {
63          Map<String, Object> map = _webAppPool.get(webAppId);
64  
65          if (map == null) {
66              map = new ConcurrentHashMap<String, Object>();
67  
68              _webAppPool.put(webAppId, map);
69          }
70  
71          map.put(key, obj);
72      }
73  
74      private Object _remove(String webAppId, String key) {
75          Map<String, Object> map = _webAppPool.get(webAppId);
76  
77          if (map == null) {
78              return null;
79          }
80          else {
81              return map.remove(key);
82          }
83      }
84  
85      private static WebAppPool _instance = new WebAppPool();
86  
87      private Map<String, Map<String, Object>> _webAppPool;
88  
89  }